BAYONNE -- A driver was involved in a head-on crash on the Bayonne Bridge early yesterday morning and then jumped into a good Samaritan’s pickup truck and fled, Port Authority police said.

Port Authority police spokesman Al Della Fave said a 27-year-old man and a 32-year-old woman from Forked River suffered serious lacerations in the 4 a.m. collision, which closed the bridge for seven hours.

The accident occurred when the driver of a sports utility vehicle crossed the center line and hit a car on the bridge, Della Fave said. When a 64-year-old Staten Island man stopped to help, the driver of the SUV jumped into the pickup truck and took off.

The 64-year-old’s truck was found abandoned in Staten Island. Police are searching for the man who took off and are considering the incident a carjacking, Della Fave said.